Quaternary Ti-Zr-Be-Ni bulk metallic glasses with large glass-forming ability

被引：30
|
作者：
Zhao, S. F. [1 ]
Gong, P. [1 ]
Li, J. F. [1 ]
Chen, N. [1 ]
Yao, K. F. [1 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
MATERIALS & DESIGN | 2015年 / 85卷
基金：
中国国家自然科学基金;
关键词：
Ti-based alloys; Bulk metallic glasses; Glass forming ability; Mechanical properties; Thermal stability; SOLID-SOLUTION PHASE; MECHANICAL-PROPERTIES; THERMAL-STABILITY; AMORPHOUS-ALLOYS; SN; MICROSTRUCTURE; THERMODYNAMICS; FABRICATION; PLASTICITY; CORROSION;
D O I：
10.1016/j.matdes.2015.07.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The glass-forming ability (GFA) of Ti-Zr-Be ternary alloys is dramatically improved by partially replacing Be with Ni. Centimeter-scale fully amorphous samples can be obtained in a wide Ni content range of 4 at 6-12 at.%. In particular, some of the developed Ti-Zr-Be-Ni alloys exhibit a critical diameter up to 20 mm, which is larger than that of other quaternary Ti-based bulk metallic glasses (BMGs). Moreover, Ni addition also enhances the yield strength and compressive plastic strain of Ti-Zr-Be alloys obviously. Based on the experimental results, the effect of substituting elements addition on the glass-forming ability ofTi-Zr-Be alloys has been systematically investigated and an empirical composition design method for the development of novel Ti-based BMGs with large CFA has been proposed. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：564 / 573
页数：10
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